A Quarter of the Wafers, a Tenth of the Bits

HBM consumes about three times the wafer per bit, and that is what repriced conventional DRAM.

Memory pricing moved from rumour to signed contracts in November 2026. Samsung’s 32GB DDR5 module rose from $149 in September to $239, and TrendForce expects PC DRAM contract prices to rise 13% to 18% quarter on quarter in the fourth quarter, a slower pace than the third but not a reversal. The mechanism is worth stating precisely, because the widely circulated version is wrong: HBM does not take seventy percent of advanced capacity. It takes 18% to 22% of DRAM wafer starts, but produces only 8% to 9% of bits, because each bit costs roughly three times the wafer of conventional DRAM. A quarter of the wafers yielding a tenth of the output is what squeezed the rest of the market. Notebook shipments fell 15.8% sequentially in the third quarter, PC makers are cutting SSD orders, and some are reworking 2027 product mixes toward lower-spec memory and fewer CPU cores. Application-side inference savings will be partly offset by hardware inflation reaching consumer prices in the first quarter of next year.